Solve for y
y=-24
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45\left(\frac{8}{9}y+8\right)-72\left(\frac{5}{6}y+\frac{3+2}{3}\right)=720
Multiply both sides of the equation by 360, the least common multiple of 8,9,5,6,3.
45\times \frac{8}{9}y+360-72\left(\frac{5}{6}y+\frac{3+2}{3}\right)=720
Use the distributive property to multiply 45 by \frac{8}{9}y+8.
\frac{45\times 8}{9}y+360-72\left(\frac{5}{6}y+\frac{3+2}{3}\right)=720
Express 45\times \frac{8}{9} as a single fraction.
\frac{360}{9}y+360-72\left(\frac{5}{6}y+\frac{3+2}{3}\right)=720
Multiply 45 and 8 to get 360.
40y+360-72\left(\frac{5}{6}y+\frac{3+2}{3}\right)=720
Divide 360 by 9 to get 40.
40y+360-72\left(\frac{5}{6}y+\frac{5}{3}\right)=720
Add 3 and 2 to get 5.
40y+360-72\times \frac{5}{6}y-72\times \frac{5}{3}=720
Use the distributive property to multiply -72 by \frac{5}{6}y+\frac{5}{3}.
40y+360+\frac{-72\times 5}{6}y-72\times \frac{5}{3}=720
Express -72\times \frac{5}{6} as a single fraction.
40y+360+\frac{-360}{6}y-72\times \frac{5}{3}=720
Multiply -72 and 5 to get -360.
40y+360-60y-72\times \frac{5}{3}=720
Divide -360 by 6 to get -60.
40y+360-60y+\frac{-72\times 5}{3}=720
Express -72\times \frac{5}{3} as a single fraction.
40y+360-60y+\frac{-360}{3}=720
Multiply -72 and 5 to get -360.
40y+360-60y-120=720
Divide -360 by 3 to get -120.
-20y+360-120=720
Combine 40y and -60y to get -20y.
-20y+240=720
Subtract 120 from 360 to get 240.
-20y=720-240
Subtract 240 from both sides.
-20y=480
Subtract 240 from 720 to get 480.
y=\frac{480}{-20}
Divide both sides by -20.
y=-24
Divide 480 by -20 to get -24.
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